How far is Roma from Honolulu, HI?

The distance between Honolulu (Honolulu Daniel K. Inouye International Airport) and Roma (Roma Airport) is 4856 miles / 7815 kilometers / 4220 nautical miles.

Distance from Honolulu to Roma

There are several ways to calculate the distance from Honolulu to Roma. Here are two standard methods:

Vincenty's formula (applied above)

• 4856.022 miles
• 7815.010 kilometers
• 4219.768 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 4863.828 miles
• 7827.573 kilometers
• 4226.551 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Honolulu to Roma?

The estimated flight time from Honolulu Daniel K. Inouye International Airport to Roma Airport is 9 hours and 41 minutes.

What is the time difference between Honolulu and Roma?

The time difference between Honolulu and Roma is 20 hours. Roma is 20 hours ahead of Honolulu.

Flight carbon footprint between Honolulu Daniel K. Inouye International Airport (HNL) and Roma Airport (RMA)

On average, flying from Honolulu to Roma generates about 565 kg of CO2 per passenger, and 565 kilograms equals 1 246 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Honolulu to Roma

See the map of the shortest flight path between Honolulu Daniel K. Inouye International Airport (HNL) and Roma Airport (RMA).

Airport information

Origin	Honolulu Daniel K. Inouye International Airport
City:	Honolulu, HI
Country:	United States
IATA Code:	HNL
ICAO Code:	PHNL
Coordinates:	21°19′7″N, 157°55′19″W

Destination	Roma Airport
City:	Roma
Country:	Australia
IATA Code:	RMA
ICAO Code:	YROM
Coordinates:	26°32′42″S, 148°46′29″E